Journal article
Numerical simulation of tunnel fires using preconditioned finite volume schemes



Publication Details
Authors:
Birken, P.
Publication year:
2008
Journal:
Zeitschrift für Angewandte Mathematik und Physik
Pages range:
416-433
Volume number:
59
Start page:
416
End page:
433
ISSN:
0044-2275

Abstract
This article is concerned with the numerical simulation of flows at low Mach numbers which are subject to the gravitational force and strong heat sources. As a specific example for such flows, a fire event in a car tunnel will be considered in detail. The low Mach flow is treated with a preconditioning technique allowing the computation of unsteady flows, while the source terms for gravitation and heat are incorporated via an operator splitting. It is shown that a first order discretization in space is not able to compute the buoyancy forces properly on reasonable grids. The feasibility of the method is demonstrated on several test cases.


Authors/Editors

Last updated on 2019-01-11 at 16:03